Zipangizo za diamondi zopangidwa ndi electroplated zimakhala ndi njira zambiri popanga, njira iliyonse siyokwanira, imayambitsa kuti chophimbacho chigwe.
Zotsatira za chithandizo chisanachitike
Njira yochizira matrix yachitsulo isanalowe mu thanki yopangira ma plating imatchedwa pre-plating treatment. Pre-plating treatment imaphatikizapo: kupukuta makina, kuchotsa mafuta, kukokoloka ndi masitepe oyambitsa. Cholinga cha pre-plating treatment ndikuchotsa burr, mafuta, filimu ya oxide, dzimbiri ndi khungu la oxidation pamwamba pa matrix, kuti chitsulo cha matrix chiwonekere kuti chikule bwino latiti yachitsulo ndikupanga mphamvu yolumikizirana pakati pa mamolekyu.
Ngati chithandizo cha pre-plating sichili bwino, pamwamba pa matrix pali filimu yopyapyala kwambiri yamafuta ndi oxide film, mawonekedwe achitsulo cha matrix chitsulo sangathe kuwonekera bwino, zomwe zingalepheretse kupangika kwa chitsulo chophikira ndi chitsulo cha matrix, chomwe ndi cholumikizira chamakina chokha, mphamvu yomangirira ndi yofooka. Chifukwa chake, chithandizo chosayenera chisanachitike plating ndiye chifukwa chachikulu cha kutaya plating.
Zotsatira za plating
Njira yothetsera vutoli imakhudza mwachindunji mtundu, kuuma ndi kukana kwa chitsulo chophikira. Ndi magawo osiyanasiyana a njira, makulidwe, kuchulukana ndi kupsinjika kwa kristalo yachitsulo chophikira zimathanso kulamulidwa.
Pakupanga zida zopangira ma electroplating a diamondi, anthu ambiri amagwiritsa ntchito nickel kapena nickel-cobalt alloy. Popanda kukhudzidwa ndi zinthu zodetsa ma plating, zinthu zomwe zimakhudza kutayika kwa ma plating ndi izi:
(1) Mphamvu ya kupsinjika kwamkati Kupsinjika kwamkati kwa chophimbacho kumapangidwa panthawi ya kuyimitsidwa kwa ma electrode, ndipo zowonjezera mu mafunde osungunuka ndi zinthu zawo zowola ndi hydroxide zidzawonjezera kupsinjika kwamkati.
Kupsinjika kwa macroscopic kungayambitse thovu, ming'alu ndi kugwa kwa chophimbacho panthawi yosungira ndikugwiritsa ntchito.
Pa nickel plating kapena nickel-cobalt alloy, kupsinjika kwamkati kumakhala kosiyana kwambiri, kuchuluka kwa chloride kumakhala kwakukulu, kupsinjika kwamkati kumakhala kwakukulu. Pa mchere waukulu wa nickel sulfate coating solution, kupsinjika kwamkati kwa watt coating solution kumakhala kochepa kuposa kwa njira zina zophikira. Mwa kuwonjezera kuwala kwachilengedwe kapena chothandizira chochotsa kupsinjika, kupsinjika kwamkati kwa macro coating kumatha kuchepetsedwa kwambiri ndipo kupsinjika kwamkati kwa microscopic kungawonjezeke.
(2) Zotsatira za kusintha kwa haidrojeni mu yankho lililonse lopangira, mosasamala kanthu za PH yake, nthawi zonse pamakhala kuchuluka kwa ma ayoni a haidrojeni chifukwa cha kugawanika kwa mamolekyu amadzi. Chifukwa chake, pansi pa mikhalidwe yoyenera, mosasamala kanthu za kupangira mu electrolyte ya acidic, neutral, kapena alkaline, nthawi zambiri pamakhala mvula ya haidrojeni mu cathode limodzi ndi mvula yachitsulo. Pambuyo poti ma ayoni a haidrojeni achepa pa cathode, gawo la haidrojeni limatuluka, ndipo gawo limalowa mu chitsulo cha matrix ndi chophimba mu mkhalidwe wa atomiki hydrogen. Zimasokoneza latisi, zomwe zimapangitsa kuti mkati mwake mukhale ndi nkhawa yayikulu, komanso zimapangitsa kuti chophimbacho chisinthe kwambiri.
Zotsatira za njira yopangira ma plating
Ngati kapangidwe ka yankho la electroplating ndi zotsatira zina zowongolera njira sizikuphatikizidwa, kulephera kwa mphamvu mu njira ya electroplating ndi chifukwa chachikulu cha kutayika kwa chophimba. Njira yopangira zida za diamondi za electroplating ndi yosiyana kwambiri ndi mitundu ina ya electroplating. Njira yopangira zida za diamondi za electroplating imaphatikizapo electroplating yopanda kanthu (base), mchenga ndi njira yokhuthala. Mu njira iliyonse, pali kuthekera kwa matrix kuchoka mu njira yopangira, kutanthauza, kuzima kwa magetsi kwa nthawi yayitali kapena kwakanthawi. Chifukwa chake, kugwiritsa ntchito njira yabwino kwambiri, njira kungachepetsenso kutuluka kwa chochitika chotaya chophimba.
Nkhaniyi inasindikizidwanso kuchokera ku "China Superhard Materials Network"
Nthawi yotumizira: Marichi-14-2025
